3 6 2 8 3 1 2 2 1 2 A) A = 3 2 1 2 1 2 1 2 1 2 1 1 X...
Câu 2: 3 6 2 8 3 1
2
2 1 2
a) A = 3 2 1 2 1 2 1 2 1 2 1 1 x + 2 x = .b) B = . x 4 x + 4 x 4 x
1
12
x ( x + 2)( x 2) xx 2 x 2